Opel Frontera UBS. Manual - part 123

4A2B–12

DIFFERENTIAL (REAR 244mm)

8. Removed flange assembly.
9. Remove the drive pinion assembly using a soft metal

rod and a hammer.

425RS012

10. Remove collapsible spacer.

11. Remove the inner bearing by using remover

5–8840–2587–0. Select insert 303174 and collet
halves 44803 in remover kit 5–8840–2587–0 for inner
bearing removal.

415RW042

12. Remove adjust shim.
13. Remove oil seal.
14. Remove oil seal slinger.
15. Remove outer bearing.
16. Remove the inner bearing outer race (1) and the outer

bearing outer race (2) by using a brass bar and a
hammer.

425RS014

425RS015

DIFFERENTIAL (REAR 244mm) 4A2B–13

Reassembly

1. Install outer bearing outer race by using installer

5–8840–0008–0 and grip 5–8840–0007–0.

425RW059

2. Install inner bearing outer race by using installer

5–8840–2571–0 and grip 5–8840–0007–0.

425RW060

3. Adjust the drive pinion mounting distance as follows:

1. Apply gear oil to the inner and outer drive pinion

bearing.  Clean the pinion setting gauge set.
Then install the gauge set together with the inner
and outer bearings.

Install gauge plate 5–8840–2572–0 (3), inner pilot
5–8840–2573–0 (2) ,stud and nut 5–8840–0127–0
(4) and outer pilot 5–8840–2575–0 (1) through inner
and outer bearings.

2. Tighten the nut to the specified torque.

Torque: 2.3 N·m (23kg·cm/20 lb in) 

425RW030

3. Clean the side bearing bores. Place discs and dial

indicator on to arbor, and place tool into position in
side bearing bores. Install and tighten the bearing
caps to the specified torque.

425RW031

Legend

(1) Dial Indicator: 5–8840–0126–0
(2) Gauge Plate: 5–8840–2572–0
(3) Disc (2 pcs.): 5–8840–2577–0
(4) Arbor: 5–8840–0128–0

4A2B–14

DIFFERENTIAL (REAR 244mm)

4. Set the dial indicator 5–8840–0126–0 to “0”.

Place it on the mounting post of the gauging arbor
with the contact button touching the indicator pad.
Force the dial indicator downward until the needle
has made a half turn clockwise. Tighten down the
dial indicator in this position.

425RS020

Legend

(1) Dial Indicator
(2) Ganging Arbor
(3) Plunger
(4) Gauge Plate

5. Position the plunger on the gauge plate. Move the

gauging arbor slowly back and forth and locate
the position at which the dial indicator shows the
greatest defection. At this point, once again set
the dial indicator to “0”. Repeat the procedure to
verify the “0” setting.

425RS021

6. After the ZERO setting is obtained, rotate the

gauging arbor until the dial indicator rod does not
touch the gauging plate. Record the number the
dial indicator needle points to.

425RS022

Legend

(1) Example=Dial indicator reading od 0.085

7. Record the pinion depth code on the head of the

drive pinion. The number indicates a necessary
change in the pinion mounting distance.  A plus
number indicates the need for a greater mounting
distance (which can be achieved by decreasing
the shim thickness). A minus number indicates
the need for a smaller mounting distance (which
can be achieved by increasing the shim
thickness).  If examination reveals pinion depth
code “0”, the pinion is “nominal”.

425RS023

DIFFERENTIAL (REAR 244mm) 4A2B–15

8. Select the shim thickness using the chart;

Pinion marking

+3

+2

+1

0

–1

–2

–3

Dial indicator read-

ing (Inches)

(Inches)

(Inches)

(Inches)

(Inches)

(Inches)

(Inches)

(Inches)

0.024

0.027

0.025

0.027

0.028

0.026

0.027

0.028

0.029

0.027

0.027

0.028

0.029

0.030

0.028

0.027

0.028

0.029

0.030

0.031

0.029

0.027

0.028

0.029

0.030

0.031

0.032

0.030

0.027

0.028

0.029

0.030

0.031

0.032

0.033

0.031

0.028

0.029

0.030

0.031

0.032

0.033

0.034

0.032

0.029

0.030

0.031

0.032

0.033

0.034

0.035

0.033

0.030

0.031

0.032

0.033

0.034

0.035

0.036

0.034

0.031

0.032

0.033

0.034

0.035

0.036

0.037

0.035

0.032

0.033

0.034

0.035

0.036

0.037

0.038

0.036

0.033

0.034

0.035

0.036

0.037

0.038

0.039

0.037

0.034

0.035

0.036

0.037

0.038

0.039

0.040

0.038

0.035

0.036

0.037

0.038

0.039

0.040

0.041

0.039

0.036

0.037

0.038

0.039

0.040

0.041

0.042

0.040

0.037

0.038

0.039

0.040

0.041

0.042

0.043

0.041

0.038

0.039

0.040

0.041

0.042

0.043

0.044

0.042

0.039

0.040

0.041

0.042

0.043

0.044

0.045

0.043

0.040

0.041

0.042

0.043

0.044

0.045

0.046

0.044

0.041

0.042

0.043

0.044

0.045

0.046

0.047

0.045

0.042

0.043

0.044

0.045

0.046

0.047

0.048

0.046

0.043

0.044

0.045

0.046

0.047

0.048

0.049

0.047

0.044

0.045

0.046

0.047

0.048

0.049

0.050

0.048

0.045

0.046

0.047

0.048

0.049

0.050

0.051

0.049

0.046

0.047

0.048

0.049

0.050

0.051

0.052

0.050

0.047

0.048

0.049

0.050

0.051

0.052

0.053

0.051

0.048

0.049

0.050

0.051

0.052

0.053

0.054

0.052

0.049

0.050

0.051

0.052

0.053

0.054

0.055

0.053

0.050

0.051

0.052

0.053

0.054

0.055

0.056

0.054

0.051

0.052

0.053

0.054

0.055

0.056

0.057

0.055

0.052

0.053

0.054

0.055

0.056

0.057

0.058

0.056

0.053

0.054

0.055

0.056

0.057

0.058

0.059

0.057

0.054

0.055

0.056

0.057

0.058

0.059

0.060

0.058

0.055

0.056

0.057

0.058

0.059

0.060

0.061

0.059

0.056

0.057

0.058

0.059

0.060

0.061

0.062

0.060

0.057

0.058

0.059

0.060

0.061

0.062

0.063

0.061

0.058

0.059

0.060

0.061

0.062

0.063

0.064

0.062

0.059

0.060

0.061

0.062

0.063

0.064

0.065

0.063

0.060

0.061

0.062

0.063

0.064

0.065

0.064

0.061

0.062

0.063

0.064

0.065

0.065

0.062

0.063

0.064

0.065

0.066

0.063

0.064

0.065

0.067

0.064

0.065

0.068

0.065